Process of forming a metallic corner



Jan. 10. 1928. 1,655,947

G. A. GALLOWITZ PROCESS OF FORMING A METALLIC CORNER Filed Oct. 4, 1924 lltl Elli (l'UlFlTAVJEl A" El-ALLO'W'ITZ, OF NEW YORK, I

FGHEMUIUN ()1? AMER/ISA, OI? ZIH'E'W YOlEtla, 1-1. Y., A CORPORATION F 15.

PROCESS Application filed. October 4;, 1924.

This invention relalee to an. :iniproyeiuent in the process of welding a metallic corner and the novelty consists; in the steps of said procwas.

llhe welding ot a metallic corner is not new and such welding has been done :loii' many years in the melting ot inetal cabinets and in ein'iilar construction where the real;- ing; of a metallic einfner becomes necessary. l'lut ouch corner, have been termed in the ease oi? corners termed of angle irons by two ot the angles irons being bevelled 1-70 as to lit together and the third being mounted on the upper edges of said joined angle irons whereby a corner is lOllllGtl but there is no actual meeting of the three members at one point nor is there any homogeneous corner whereby all of the members are fused integral v.

lhere is, therefore, a serioua problem 0t forming a metallic corner so as to have all ot the atiaii'is radiate em a conunon point vhich is the apex of the corner whereby inaxinuni'i strength may be ii'isured, an in- .reaae in the welding area also obtained providing the greatest amount o'li fusing and a proper interlocking ot the three angle irons or members meeting at the corner so as to term a homogeneous corner in which all members are tuned integrally with an even distribution of heat during the welding thereby furnishing a corner which in absolutely smooth on the inside and outside without any interruption to the vision when such. corners are used tor exhibition cabinets My process and product has solved all oi these probleuu's furnishing a process whereby three an gle irons or metallic li'lOll'llOClS can be welded together by the note-hing or cutting of only two so that the third is intact thereby furnishing the greatest strength to said corner.

Referring to the drawings Figure l is a perspective ol my metallic corner ready for welding. Figure 2 is a perspective oil? one angle iron out ready TliOl' use. Figure 3 is a PCI'SPGClJlVB ot' the second angle iron out ready for use. Figure t is a bottom plan view oil? the corner shovm in Figure 1.

In the drawings 5 is an angle iron having a portion stamped or died out at 11 and having a pointed portion l5 with a bevelled taco l2 and a bevelled face 13 out at the same \l'lEI) S'IAT ES PATET OFFltllL 2 adapted to lit the Silllll'lPOtl out parts it ol:

2 angle iron 6 and it o'lf angle iron llti her-- e lwd edges ill and 12 are placed together as 5 shown in l igures l and cariyuig; out my process ll first stainp ie out o," d angle irons ii and o in the huigth required iaiiuultaneeusly lbruiing pointed portions 1? and ill res iectively and two bevelled tacos fill and lei-l and the bevelled taeef-s l) and ll) respectively.

[ljheee stan'iped angle irons 5 and ti are then placed with the bevelled edges 12 and id together as shown in lliguree 1 and l and the third angle iron is placed as there shown so that the bevelled edges 9 and 1? contact with the inside face or? said angle iron 7.

lfhe angle irons i ti and i" will then be rigidly secured togi e her in the positions as shown in Figure l whereupon the welding heat will be applied in. the usual well ltnown manner on the-inside 0'? said corner as shown in. Figure 1 together with the welding stiel: custon'iarily used in such welding OljGl'lltlUIlfs and as the heat is applied and the welding i'iised an opening lit at the very apei: the corner will be thereby tilled together with the space between the liievelled edges ti and 13 and the lace ol i] and as the 'weli'lingg; process proeiaids-i as unual lhe metals of 5 ti and 7 to; i;elher with the metal ot' the welding nticlc will all be 'lused the h at of the welding being equally dill'used between all three angle irons 5, ti and 'i' which meet at the common apex thereby e'll'ectino' an even heating and fusing of all parts as the weldino; heat can be applied at or so near the apex that the heat spreads evenly in all directions and through the contacting portions of the angle irons 5, e and 7.

When the metal ol the angle irons 5, ti and 7 begins to actually 'lu-se these an turned, in their rigid position forming: a corner from the position shown in Figure l, to the position shown in Figure 4 so that the welding: heat and welding: stick ran be applied to the groove formed by bevelled faces l0 and and the meeting edges ol 5 till 6 and 7 applying said welding heat until the fusing of angle irons 5, 6 and 7 is completed whereby a metallic corner which is smooth faced inside and out is formed.

The carrying out of said process and the formation of a perfectly welded corner as described may be applied to suitable metal pieces ot'any desired length and a series of said corners formed as may be desired whereby a museum cabinet of suiiicient length, breadth and depth may be formed for the exhibition of the largest specimens, said metal frame being substantially narrow but sufiiciently strong to hold the large plates of glass necessary to furnish a. clear vision to the observer. The construction of corners of such strength permits the use of not only comparatively narrow angle irons but makes it possible to use angle irons oi medium tion of weight or thickness the construc said corners furnishing sufficient strength so that even large swinging doors may be carried by frames constructed o'l corners made in accordance with my process.

I claim:

1. The process of making a fused metallic corner having all strains radiate from a common point comprising the cutting of two angle irons so as to form extension points on each in the same plane said points being adapted to join and form a right an gle, fitting a third angle iron into said cutting perpendieular to said extension points and contacting the edges of same, said contacting extension edges being first bevelled to form grooves on the inside of the corner to mod and the meeting edges of said cxtensions being grooved on the outside of said corner and welding said contacting edges in the well known n'innncr using welding stick to lill said grooves.

2. The process ot ior ning a welded corner o't three angle irons having all strains radiate from a common point (oillpi'ir ing tllc cutting of two so as to t'orin extension angles meeting in the same plane and forming a right angle, lilting a third square ciul angle iron perpendicular to said extension angle-s, bevelling said extension angles on the outside of said right angle on the inside laces adjacent to the perpendicular angle iron and bevelling edges on the hack ol' said meeting edges oi the extension tin e. and fusing said contacting edges in the well known manner using a welding at ir q to close the openings at the meeting edges.

3. The process ol forming a wcldc l nietallic corner having all strains radiate l'roni a common point consisting of cutting two angle irons so as to form a rectangular seat for a third and simultaneously lot-nuns, bevelled faces on the meeting edgcs ol said cut angle irons forming a groove on the hack of their meeting edges and also forming grooves on the inside oli said corner on the edges contacting with said third angle iron, and welding said three angle irons together in the well known manner using a welding stick to till said grooves.

In testimony whereoil I aliix my signal urc.

GUSTAVE A. GALLOWllZ. 

